Let us understand that the shielding layer mainly acts as an anti-external electromagnetic interference, preventing the interference of the electromagnetic field generated by itself to the surrounding environment and the role of the current in the use process.
According to the requirements of the use of shielding performance, the choice of materials are also different, such as copper wire braided shielding, copper tape wrapped shielding, copper wire sparse wrapped shielding, aluminum alloy wire braided shielding, copper clad aluminum wire braided shielding, aluminum plastic composite tape wrapped shielding and so on. In order to ensure the continuity of the shielding layer and reduce the transfer resistance of the shielding layer, one or more annealed copper wires are usually placed longitudinally in the shielding layer as drainage lines for copper tape wrapping and aluminum-plastic composite tape wrapping.
The main direction of the copper tape shielding current is the same spiral as the copper tape. The copper wire shielding current flows through a short path and emits less heat. However, with two layers of copper tape shielding, the shielding cross-sectional area increases, the flowing current decreases, and the heat emitted also decreases. The same can play the role of shielding signals. However, for the 500mm2 carrying capacity is large, the electromagnetic field generated by itself is also large. When the short-circuit current exceeds a certain value, the effective section value of the two-layer 0.12mm copper strip cannot reach the relatively large effective section value that can be achieved by copper wire winding.
From the above comprehensive consideration, copper wire shielding effect is much better than other shielding methods, and the continuity is more reliable, you can choose copper wire shielded cable.
However, depending on the construction plan and the laying environment, the utilization rate of copper tape shielded cables is also very high. Customers according to the actual situation of selection, order.
Qingdao Huaqiang Cable is a manufacturer specializing in the production of wires and cables. The performance of Huayu brand wires and cables produced by the company meets the requirements of the International Electrotechnical Commission and national standards. The leading products are: aluminum alloy cables, crosslinked power cables, PVC insulated power cables, control cables, computer cables, mineral insulated cables, wires and cables for electrical equipment, etc. Various types of cables can also be processed and customized according to user needs.